Ruby: Measure execution time of your code

stopwatch.rb

def stopwatch(cycles = 1)
  cycles = cycles.to_i
  return if cycles == 0

  start = Time.now.to_f

  cycles.times do
    yield
  end

  elapsed_time = Time.now.to_f - start

  puts "Total elapsed time: #{elapsed_time}"
  puts "Average time: #{elapsed_time / cycles}" if cycles > 1
end


# Run multiple cycles to have more accurate results.
stopwatch(10) do
  # Your code.
  # sleep(0.1)
end

# Run your code only once.
stopwatch do
  # Your code.
  # sleep(0.1)
end